Combined grain h u ller



(No Model.) v

B. E; FISCHER. COMBINED GRAIN HULLER, SCOURER, AND PO'LISHER.

Patented May 30, 1893.

BERNHARD E. FISCHER, OF DEFIANCE, OHIO.

. COMBINED GRAIN HULLER,

scou RER, AND POLISH ER.

SPECIFICATION forming part ofLetters Patent No. 498,510, dated May 30,1893.

Applicant nea im 17, 1892.

To a/ZZ whom it may concern: Y

Be it known that I, BERNHARD E. FISCHER, a citizen of the UnitedStatesof America, residing at Defiance, Defiance county, Ohio, haveV inventedcertain new and luseful lmprovements in a Combined Grain Huller,Scourer, and Polisher, of which the following is a specification,reference being had therein to the accompanying drawings.

This improvement relates to that class of scourers in which the grain isunder great compressionwhilelbeingacted upon, and which compression canbe increased or decreased at pleasure, and the invention consists in thepeculiar construction, arrangement and cornbinations of parts Aby whichthese ends are obtained, which are hereinafter more particularlydescribed and then definitely claimed. In the accompanyingdrawings-Figure lis an elevation of a seourer constructed according tomy invention with part broken away. Fig. 2 is a section of the same onthe line yy, Fig. l. Fig. 3 is a horizontal section on line :n a; Fig.l. Fig. 4 is a reversed plan of the lower end of the scouring cylinder.

Referring now to the details of the draw-4 ings by letters-A representsthe frame of the machine of any suitable material or construction onwhich is set a plate B having a cylindrical flange C andperforations btoadmit air. Below this plate is a tube D into which leads a spout E.Surrounding the iiange Cis a steel wire cloth cylinder F corrugated as ishown in Fig. 3, above which is a head f, and

in one side an opening f (shown in dotted lines in Fig. l). On its sideis a slide G havinga perforation g, through which the scoured grainpasses into the discharge spout H. On the side of the opening f' areguide plates p to keep the slide G in its proper position.

I is a cylinder having a corrugated surface as shown and provided with ashaft J mounted in a step K on the frame and carrying on its lower end aspiral conveyer or screw L working in the tube D, said tube and conveyerforming a forced feed. Surrounding the wire cloth cylinder is a casing Mof any suitable material and above the top of the saine is a fan N fordrawing away the fluify matters, dust, &c.,but as there is nothing newin this feature a further description of it is unnecessary. On the lowerend of the cylin- Serial No. 437,093- (No model.)

der are three tangential? discharge blocks O which act to force out thegrain as itis brought up bythe conveyer or screw L. These blocks may bereversed if desired, so that the cylinder may be made to run in eitherdirection required.

The operation is as follows: The grain is fed into the spout E and iscarried up by the conveyer and forced out by the tangential blocks intothespace between the cylinders F and I, and each grain, by contact withthe corrugations, and with the others, rapidly becomes scoured and '1polished under the pressure caused by the forcing of the grain in at thebottom of the cylinder, and as it becomes polished, passes out at thehole g in the slide G. The amount of scouring and polishing can beregulated perfectly by raising or lowering the slide G, which willretain the grain under the scouring operation a longer or shorter timeaccordlng to whether the opening is high or low. The degree ofcompression will also bev not absolutely, necessary as very good resultscan be obtained with the grain in a dry condition.

By the use of my improved scourer the outer hulls of the wheat berriesare rapidly loosened by the friction and then taken away 'by the draftof the fan, and the berries polished as they rise in the cylinder. Itwill be observed that the hard, outsideskin is operated on under thegreatest pressure due to the weight of the superincumbent grain, whilethe final polishing is done Where the pressure is the least and when thesofter portion of the shell is under action.

I consider the vertical corrugations in cylinder F as an essentialfeature of my improvement,becauseby theiractionthegrains,asthey come inContact with said corrugations, are caused to rotate and thus rub oneagainst the other, without the tendency to carry them upward or toimpede their upward motion which results from diagonal or spiralcorrugations. I also consider it important that the spiral conveyershall be below the cylinder and in IOO a vertical position, for owing tothe weight and pressure of the grain above it, there is considerablescouring action on the grain by said spiral conveyer as it feeds thegrain into the scouring cylinders proper.

What I claim as new is;

1. The combination in a grain scourer of two vertical corrugatedcylinders, one within the other, and one of which revolves, a tube orcasing entering the lower end of one of said cylinders, a vertical screwconveyer working within, and a spout leading into the lower end of saidtube or casing, and a discharge opening in one ofthe cylinders,substantially as described.

2. The combination in a grain scourer, of two vertical cylinders, onehaving a discharge opening and the other revolving within it, a verticalspiral conveyer around the shaft of said revolving cylinder, a tubeentering the lower end of one of said cylinders and surrounding theconveyer, a spout leading into the lower end of said tube, andanadjustable slide having an opening therein to govern the dischargethrough the opening in the stationary cylinder, substantially asdescribed.

3. The combination in a grain scourer, of two corrugated cylinders, oneof which revolves, a conveyer around the shaft of said revolvingcylinder, tangential blocks between said cylinder and the conveyer, anda discharge opening in the fixed cylinder, substantially as described.

In testimony whereof I aix my signature, in presence of two witnesses,this 3d day of June, 1892.

BERNHARD E. FISCHER.

Witnesses:

BENJ. B. KINGSBURY, EDWIN PHELPs.

